table 'xxxxx' already exists

请教大神们，otter运行一段时间会挂起，报如下错误，各位有遇到吗？请问有哪几种原因会引起？ pid:1 nid:2 exception:setl:com.alibaba.otter.node.etl.load.exception.LoadException: java.util.concurrent.ExecutionException: com.alibaba.otter.node.etl.load.exception.LoadException: com.alibaba.otter.node.etl.load.exception.LoadException: org.springframework.jdbc.BadSqlGrammarException: StatementCallback; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'nhv_contact' already exists Caused by: java.util.concurrent.ExecutionException: com.alibaba.otter.node.etl.load.exception.LoadException: com.alibaba.otter.node.etl.load.exception.LoadException: org.springframework.jdbc.BadSqlGrammarException: StatementCallback; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'nhv_contact' already exists at java.util.concurrent.FutureTask.report(FutureTask.java:122) at java.util.concurrent.FutureTask.get(FutureTask.java:192) at com.alibaba.otter.node.etl.load.loader.db.DataBatchLoader.load(DataBatchLoader.java:107) at com.alibaba.otter.node.etl.load.loader.OtterLoaderFactory.load(OtterLoaderFactory.java:50) at com.alibaba.otter.node.etl.load.LoadTask$1.run(LoadTask.java:85) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)

原提问者GitHub用户 onepiece-yang